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Process for the manufacture of medical and dental, alloplastic, endoprosthetic and exoprosthetic fittings

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Publication number
EP0054785B1
EP0054785B1 EP19810110135 EP81110135A EP0054785B1 EP 0054785 B1 EP0054785 B1 EP 0054785B1 EP 19810110135 EP19810110135 EP 19810110135 EP 81110135 A EP81110135 A EP 81110135A EP 0054785 B1 EP0054785 B1 EP 0054785B1
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EP
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Grant
Patent type
Prior art keywords
alloplastic
surfaces
process
fitting
design
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19810110135
Other languages
German (de)
French (fr)
Other versions
EP0054785A1 (en )
Inventor
Werner H. Dr.med.dent. Mörmann
Marco Dr. Brandestini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brandestini Marco Dr
Mormann Werner H Drmeddent
Original Assignee
Werner H. Dr.med.dent. Mörmann
Marco Dr. Brandestini
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00Dental prostheses; Making same
    • A61C13/0003Making bridge-work, inlays, implants or the like
    • A61C13/0004Computer-assisted sizing or machining of dental prostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00Dental auxiliary appliances
    • A61C19/04Measuring instruments specially adapted for dentistry
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00Filling or capping teeth
    • A61C5/70Tooth crowns; Making thereof
    • A61C5/77Methods or devices for making crowns
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00Impression cups, i.e. impression trays; Impression methods
    • A61C9/004Means or methods for taking digitized impressions
    • A61C9/0046Data acquisition means or methods
    • A61C9/0053Optical means or methods, e.g. scanning the teeth by a laser or light beam
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/42Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine
    • G05B19/4202Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine preparation of the programme medium using a drawing, a model
    • G05B19/4207Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine preparation of the programme medium using a drawing, a model in which a model is traced or scanned and corresponding data recorded
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30952Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using CAD-CAM techniques or NC-techniques

Description

  • [0001] [0001]
    Die Erfindung betrifft ein Verfahren zur Herstellung medizinischer oder zahnmedizinischer alloplastischer Passkörper. The invention relates to a process for the manufacture of medical or dental alloplastic fitting body.
  • [0002] [0002]
    Bei der Inkorporation alloplastischer Implantate spielt die exakte Passung zur Herstellung einer guten Verankerung und dauerhaftem Sitz für die physiologische Belastung der aufnehmenden Gewebe aber auch für die ausgeglichene physikalische Belastung der Alloplastik und/oder ihre Funktion eine entscheidende Rolle. In the incorporation of alloplastic implants, the exact fit for making a good anchorage and permanent seat for the physiological stress of receptive tissue plays but also for the balanced physical load of the allograft and / or its function a decisive role. Dies gilt beispielsweise für enossale und alveoläre Implantate im Kieferbereich, für exoprothetische, optische Augenhaftschalen, für Hüftgelenksendoprothesen, aber auch für rein zahnärztliche alloplastische, endo- und exoprothetische Passkörper, wie Zahnfüllungen oder Kronen und Brükken. This is the case for endosseous and alveolar implants in the jaw area, for exoprosthetic, optical eye detention trays for hip joint prostheses, but also for purely dental alloplastic, endo- and exoprosthetic fitting body, such as dental fillings or crowns and Brükken. Bei Knochenimplantaten und den erwähnten Sehhilfen finden üblicherweise konfektionierte Passkörper Verwendung, die entweder nach individuellen Massen ausgewählt werden oder das zu versorgende Organ wird nach Konfektionsmassen gestaltet. In bone implants, and the above-mentioned visual aids usually take assembled fitting body use, which are selected either by individual compositions or the organ to be supplied is designed to confection compositions.
  • [0003] [0003]
    In der Zahnheilkunde dominiert die individuelle Gestaltung von Passkörpern, die nach überlieferten Prinzipien der Zahntechnik hergestellt werden. In dentistry, the customization of fitted pieces, which are produced according to traditional principles of dental technology dominates. Die Anwendung des genannten Verfahrens im zahnärztlichen Bereich wird im folgenden beispielsweise aufgeführt: The application of the procedure for the dental field is listed in the following example:
    • Zahnärztliche Füllungen aller Art sind als alloplastische (= Fremdkörper) Implantate anzusehen, deren Zweck es ist, den Zahn als Organ, insbesondere die Zahnkrone in Form und Funktion dauerhaft wiederherzustellen. Dental fillings of any kind are to be regarded as alloplastic (= foreign bodies) implants, whose purpose is to restore the tooth as an organ, especially the crown in form and function permanently. Bekannt sind Amalgam-, Metallguss (Gold)-, Keramik- und Kunststoffkompositfüllungen. are known amalgam, metal casting (Gold) -, ceramic and Kunststoffkompositfüllungen.
  • [0004] [0004]
    Mit Hilfe konventioneller Zahntechnik können Einlagefüllungen in Form von Inlays, Onlays und Overlays in bezug auf Materialbeständigkeit, physikalische Eigenschaften und Morphologie, befriedigend hergestellt werden; With the help of conventional dentistry inlays may take the form of inlays, onlays and overlays in relation to material resistance, physical properties and morphology produced satisfactory; nachteilig sind die hohen Materialkosten zB Gold. disadvantageous are the high cost of materials such as gold. Zudem erfordert die konventionelle zahntechnische Herstellung von Einlagefüllungen, sei es aus Metall oder bei Verwendung anderer Materialien, beispielsweise Komposit oder Keramik, eine Vielzahl technischer Abläufe, wie Abdrucknahme, Modellherstellung, Wachsmodellation, Einbetten des Wachsmodells, Metallguss bzw. Kunststoffspritzguss oder Stopfen, Pressen und Heiss-Polymerisation. In addition, the conventional dental preparation of inlays requires that it is made of metal or using other materials, for example composite or ceramic, a variety of technical processes, such as taking an impression, model production, wax, embedding the wax model, metal casting or plastic injection molding or stopper, pressing and hot polymerization.
  • [0005] [0005]
    Im US-Patent 4182312 wurde vorgeschlagen, dreidimensionale Oberflächeninformationen von Zähnen und umliegendem Gewebe direkt am Patienten mechanisch abzutasten, um damit, wie bei einer Kopierfräsmaschine, Bearbeitungsmaschinen zur Herstellung von Zahnprothesen zu steuern. In US Patent 4182312 it has been proposed, mechanically sensing three-dimensional surface information of teeth and surrounding tissue directly on the patient in order to control, as in a copy milling machine, machines for making dental prostheses. Hierzu muss eine Sonde mit einem daran fest fixierten Übertragungsgestänge, in Kontakt mit den interessierenden Oberflächen, vom Zahnarzt im Munde des Patienten geführt werden. For this purpose, has a probe with a thereto firmly fixed transmission rod, in contact with the surfaces of interest, be performed by the dentist in the patient's mouth. Nachteilig ist dabei, dass zur vollständigen Registrierung einer Fläche sehr viele Abtastbewegungen durchzuführen sind, was zeitraubend und für die Patienten belastend ist. The disadvantage is that many scanning movements are to be performed to complete registration of an area, which is time consuming and stressful for the patient. Umständlich ist auch, dass die Sondenspitzen, je nach der Form des erforderlichen Bearbeitungswerkzeuges, gewechselt werden müssen. is cumbersome and that the probe tips according to the shape of the required machining tool must be changed. Zudem wird eine fixe Bezugsebene zwischen Bearbeitungswerkzeug und Abtastorgan benötigt. In addition, a fixed reference plane between machining tool and scanning element is needed. Nachteilig und für den Patienten unangenehm ist, dass bei dieser Art der Abtastung die Registriereinheit mit Hilfe eines Trays am Kiefer des Patienten mit Gips befestigt werden muss. It is disadvantageous and uncomfortable for the patient that the recording unit has to be secured by means of a tray on the patient's jaw with plaster in this type of scan. Durch die Befestigung dieser umfangreichen Hilfseinrichtungen am Patienten wird der Zugang für ungestörte Abtastungen mit der Sonde behindert. By attaching this extensive auxiliary equipment at the patient access for undisturbed samples is hindered with the probe. Diese umfangreichen Hilfsmassnahmen direkt am und im Munde des Patienten sind vom zahnärztlichen Standpunkt aus als wesentlich stärkere Belastung für den Patienten anzusehen als die herkömmlichen Abformungs- und Herstellungsmethoden von Zahnprothesen. These extensive relief efforts directly on and in the mouth of the patient are to be considered by the dental point of view as a much stronger burden on the patient than traditional Abformungs- and manufacturing methods of dental prostheses.
  • [0006] [0006]
    Neben der im obigen US-Patent 4182312 beschriebenen mechanischen Abtastmethode sind auch optische 3-dimensionale Messvorrichtungen bekannt (Butcher, GW et al., Brit. dent. J., 1981, 151, p. 304; Mikhail, EM chap. 17-19 of «Photogrammetry»; FH Moffit ed. pp. 579-582, Harper & Row, New York 1980). In addition to that described in the above US patent 4182312 mechanical scanning method are also 3-dimensional optical measuring devices known (Butcher, GW et al, Brit J. dent, 1981, 151, p 304;.... Mikhail, EM chap 17-19. of "Photogrammetry";. FH Moffit ed pp 579-582, Harper & Row, New York 1980)..
  • [0007] [0007]
    Diesen ist gemeinsam, dass sie ausschliesslich diagnostischen Zwecken dienen. These have in common that they are used exclusively for diagnostic purposes. Die Vorrichtungen von Butcher und Mikhail sind nichtautomatische Instrumente, die eine zeitaufwendige, manuelle Koordinatenbestimmung erfordern. The devices of Butcher and Mikhail are not automatic instruments that require a time-consuming, manual coordinate determination.
  • [0008] [0008]
    Die Moire-Topographie liefert eine Technik zur automatischen Profilaufnahme, beschränkt sich jedoch im Artikel von K. Takasaki (cMoire Topography, Systems and Applications» chap. 8 in Handbook of Non-topographic Photogrammetry, HM Karara, ed., Am. soc. of Photogrammetry everybody press 1979) auf eine grob abgestufte, nicht absolute Bildtiefenbestimmung. The moiré topography provides a technique for automatic profiling, but of limited in the article by K. Takasaki (cMoire Topography, Systems and Applications "chap. 8 in Handbook of Non-topographic Photogrammetry, HM Karara, ed., Am. Soc. Photogrammetry everybody press 1979) on a roughly graded, not absolute image depth determination.
  • [0009] [0009]
    Im US-Patent 3861 044 ist in allgemeiner Form ein Verfahren beschrieben, bei welchem ein Passkörper zum Einsetzen in eine Ausnehmung eines Zahnes herzustellen ist. In US Patent 3861 044 in general terms, a method is described in which a fitting body for insertion is to be made in a recess of a tooth. Dabei wird die Form der Ausnehmung photographisch erfasst und Daten der Aufnahme werden gespeichert. The shape of the recess is recorded photographically and data recording are stored. Anschliessend wird die Ausnehmung des Zahnes mit Wachs gefüllt, der Wachsfüllkörper vom Zahnarzt in die gewünschte Endform gebracht und dann eine neue Aufnahme gemacht, um deren Daten ebenfalls zu speichern. Subsequently, the recess of the tooth is filled with wax, brought to the Wachsfüllkörper by the dentist in the desired final shape and then made a new recording, to store their data as well. Die Gesamtheit der Daten wird dann zur Steuerung einer Werkzeugmaschine verwendet und der definitive Füllkörper hergestellt. The entirety of the data is then used to control a machine tool and the definitive packing made.
  • [0010] [0010]
    Beim bekannten Verfahren muss somit eine Art provisorischer Füllkörper in einem Zwischenschritt hergestellt werden. In the known method a kind of temporary packing must therefore be made in an intermediate step. Demgegenüber erlaubt das erfindungsgemässe Verfahren die Herstellung eines endgültigen Füllkörpers mit einer einzigen Aufnahme, welche mittels vorprogrammierter Daten zu einem vollständigen Konstruktionsplan verarbeitet wird, ohne das ein provisorischer Füllkörper und eine zweite photographische Erfassung nötig wäre. In contrast, the inventive method allows the production of a final filling body in a single shot, which is processed to form a complete construction plan by means of pre-programmed data without having a temporary filler and a second photographic detection would be necessary.
  • [0011] [0011]
    Die europäische Patentanmeldung EP-A-0040165 bezieht sich auf ein Verfahren, welches jenem der vorliegenden Erfindung in groben Zügen nahekommt, ohne jedoch das wichtigste Merkmal, nämlich die datenmässige Vervollständigung des Konstruktionsplanes in einer für den Fachmann verständlichen Weise aufzuzeigen. The European patent application EP-A-0040165 relates to a method which is close to that of the present invention, in broad terms, but without showing the most important feature, namely the data excessive completion of the design plan in one understood by the skilled worker. Es sei noch ausdrücklich darauf verwiesen, dass dieses Dokument für die Ansprüche 1,2 und 4-6 unter Art. 54 (3) EPUe fällt, jedoch für die Frage der erfinderischen Tätigkeit dieser Ansprüche nicht von.Bedeutung ist. It should be expressly pointed out that this document for the claims 1,2 and 4-6 under Art. 54 (3) EPC, but is not von.Bedeutung to the question of inventive step of these claims.
  • [0012] [0012]
    In der nachstehend näher erläuterten, erfindungsgemässen Lösung werden die bekannten umständlichen Techniken umgangen. In the illustrated in more detail below, the inventive solution, the known complicated techniques are bypassed.
  • [0013] [0013]
    Aufgabe der Erfindung ist, zB Füllungskörper im Sinne von Einlagefüllungen aus einem fabrikmässig vorbereiteten Füllungsmaterial als Passkörper aus Hartmaterial, wie Metall, Keramik, Kunststoff, Kompositkunststoff oder Kombinationen derselben, unter Umgehung konventioneller Zahntechnik, nach individuellen Kavitätenmassen auszuarbeiten. The object of the invention, eg filling body within the meaning of inlays of a factory-prepared filling material as a fitting body made of hard material such as metal, the same to prepare ceramic, plastic, composite resin, or combinations bypassing conventional dental technology, according to individual Kavitätenmassen.
  • [0014] [0014]
    Erfindungsgemäss wird die Aufgabe bei einem Verfahren zur Herstellung medizinischer oder zahnmedizinischer alloplastischer, endo- und exoprothetischer individueller Passkörper aus Hartmaterialien dadurch gelöst, dass Oberflächen von Körperorganen oder an Körperorganen geschaffene Oberflächen, körperhafte Formen und Räume in mindestens Teilen ihrer Wandungen und ihren Begrenzungen und die an die vorgenannten Gestaltungen angrenzenden, nicht operativ bearbeiteten Oberflächen in ihrer räumlichen und topographischen Gestalt auf optischem Weg berührungsfrei räumlich erfasst und mittels 3-dimensionaler Bildauswertung registriert werden und anhand des Registrates ein Konstruktionsplan des zur Organergänzung erforderlichen Passkörpers berechnet und zur Kontrolle bildlich dargestellt wird, wobei zur Erstellung dieses Konstruktionsplanes optisch nicht erfasste Flächen durch Anpassung vorprogrammierter Krümmungradien an die Grenzlinien der erfassten Flächen ergänzt werden, und According to the invention the object is achieved in a method for the manufacture of medical or dental alloplastic, endo- and exoprothetischer individual fitting body made of hard materials, characterized in that surfaces of body organs or created at organs of the body surface, body-like forms and spaces in at least parts of their walls and their limitations and to the aforementioned configurations adjacent, non-operating machined surfaces are detected by optical means without contact spatially in their spatial and topographical shape and recorded by means of 3-dimensional image analysis, and calculates a construction diagram of the required for organ supplementation ball body on the basis of Regis trates and control is depicted, wherein the preparation of this design plan not optically detected faces are supplemented by adapting pre-programmed radii of curvature at the boundary lines of the detected faces, and dass schliesslich das bestimmungsgemässe Material durch den Konstruktionsplan und ein Bearbeitungsprogramm zu einem der Form des betreffenden Organs zumindest annähernd angepassten alloplastischen Körper gestaltet wird. that finally the Intended material is shaped by the construction plan and a machining program to the shape of the organ in question at least approximately matched alloplastic body. Bevorzugte Ausgestaltungen des erfindungsgemässen Verfahrens gehen aus den Ansprüchen 2 bis 6 hervor. Preferred embodiments of the inventive method are apparent from claims 2 to. 6
  • [0015] [0015]
    Unter Oberflächen, an die der Passkörper anpassbar ist, werden alle Gewebe-Organoberflächen des menschlichen Körpers verstanden, so ua auch Weich- oder Hartgewebe oder Körpersubstanzen, die kein Gewebe im eigentlichen Sinne sind, zB Zahnschmelz. Under surfaces to which the fitting body can be adapted, all the tissue-organ surfaces of the human body to be understood as including soft or hard tissue or bodily substances that are no tissue in the strict sense, such as tooth enamel.
  • [0016] [0016]
    Nachstehend werden Ausführungsbeispiele näher erläutert. Embodiments are described in detail.
  • [0017] [0017]
    Es zeigen Show it
    • Fig. 1 eine schematische Darstellung des Ablaufes des erfindungsgemässen Verfahrens, Fig. 1 is a schematic representation of the sequence of the inventive method,
    • Fig. 2 eine schaubildliche und schematische Ansicht einer natürlichen Zahnkrone mit einer Inlaykavitäten-Präparation, Fig. 2 is a perspective and schematic view of a natural tooth with an inlay cavities crown preparation,
    • Fig. 3 eine Draufsicht auf eine Teil-Zahnreihe und Fig. 3 is a plan view of a partial row of teeth and
    • Fig. 4 eine Teilschnittansicht durch eine Zahnreihe mit Andeutung der Lage des Bildaufnahmekopfes. Fig. 4 is a partial sectional view through a row of teeth with indication of the position of the image pickup head.
  • [0018] [0018]
    Nach der schematischen Darstellung in Fig. 1 wird eine bildliche Erfassungsmethode, sei es optisch oder elektronenoptisch, dazu benutzt, beispielsweise eine Zahnkavität direkt in der Mundhöhle des Patienten oder ausserhalb der Mundhöhle, an einem Abdruck der Kavität, durch Positionieren eines Bildaufnahmekopfes in ihrer Geometrie, ihren Grenzlinien und Nachbarbeziehungen zu erfassen und diese Information an einen programmgesteuerten Computer zur Berechnung einer 3-dimensionalen Konstruktionsdarstellung zu übermitteln. According to the schematic representation in Fig. 1 is a pictorial detection method, either optical or electron microscopy, is used, for example a tooth cavity directly in the oral cavity of the patient or outside the oral cavity, on an impression of the cavity, by positioning an image pickup head in their geometry, to detect their boundary lines and neighboring relations, and to forward this information to a program-controlled computer for calculating a 3-dimensional structural view. Die Computerdarstellung der Zahnkavität wird anhand eines Bildschirmes vom Zahnarzt auf Vollständigkeit in bezug auf die operationellen Anforderungen überprüft und gegebenenfalls eine günstigere Positionierung des Bildaufnahmekopfes oder operative Änderungen bzw. Ergänzungen der Präparation am Zahn vorgenommen. The computer representation of the tooth cavity is checked on the basis of a screen by the dentist to be exhaustive in regard to the operational requirements and application of a possible favorable positioning of the image recording head or operational changes or additions to the preparation of the tooth. Die für richtig befundene Computerdarstellung der Zahnkavität wird anhand der Nachbar- und Grenzstrukturen durch Extrapolationen des Computers und nötigenfalls durch direkte Konstruktionsangaben des Zahnarztes, beispielsweise Tastatur, Lichtgriffel oder Digitalisierer, in ihren fehlenden äusseren Zahnflächen so ergänzt, dass sie einen vollständigen, den Zahn in allen Teilen wiederherstellenden Passkörper ergibt. The were determined to be correct computer representation of the tooth cavity is supplemented with reference to the neighboring and border structures by extrapolations of the computer and, if necessary, by direct construction details of the dentist, for example, keyboard, light pen or digitizer in their lack of outer tooth surfaces so that they complete, the tooth in all parts restorative fitting body produces. Nach Abschluss der Konstruktion steuert der Computer anhand der konstruktionsgegebenen Daten und mit einem Steuerpogramm die Bearbeitung zur Herstellung des Füllungspasskörpers aus einem vordimensionierten Füllungsrohmaterial. After completion of the construction of the computer controls on the basis of given design data and a Steuerpogramm the processing for making the filling body from a pre-sized ball filling raw material. Dadurch kann, unter Umgehung von herkömmlichen, labortechnischen Arbeitsmethoden, ein individueller Passkörper rationell ausserhalb der Mundhöhle hergestellt werden, der dem Zahnarzt sofort zur Inkorporation zur Verfügung steht. Characterized an individual fitting body can, bypassing of conventional laboratory working methods, are efficiently manufactured outside the oral cavity, the dentist is immediately available for incorporation.
  • [0019] [0019]
    Anhand der Fig. 2 bis 4 wird die Situation bei der Anwendung des erfindungsgemässen Verfahrens im zahnärztlichen Bereich beispielsweise erläutert. Referring to Figs. 2 to 4 the situation when applying the inventive method is explained in the dental field, for example.
  • [0020] [0020]
    Fig. 2 zeigt die Ansicht einer natürlichen Zahnkrone 1 mit einer typischen, sich auf mehrere Zahnflächen erstreckenden Zahnkavität 2, deren axiale Wände 3, 4 in jedem Teil mit einem nach okklusal, dh zur Kaufläche offenen Winkel von mindestens 4°, zu einer gemeinsamen Einschubachse 7 geneigt sind. Fig. 2 shows the view of a natural tooth crown 1 with a typical, extending to several tooth surfaces dental cavity 2 whose axial walls 3, 4 in each portion having an occlusal direction, ie to the occlusal surface open angle of at least 4 °, to a common insertion axis are inclined. 7 Den Kavitätenboden bilden horizontale Flächen 5 und der Kavitätenrand wird durch eine Schrägung 6 gebildet. The floor of the cavity form horizontal surfaces 5 and the margin of the cavity is formed by a chamfer. 6
  • [0021] [0021]
    Fig. 3 zeigt die Okklusalansicht einer in allen Wandteilen nach okklusal offenen dreiflächigen, mesialokklusal-distalen Inlaykavität 2, mit mesialem 8 und distalem 9 Nachbarzahn. Fig. 3 shows the occlusal view of a wall in all parts of the occlusal open trihedral, mesialokklusal-distal inlay cavity 2, with 8 mesial and distal 9 adjacent tooth.
  • [0022] [0022]
    Fig. 4 zeigt die Darstellung eines mesio-distalen, mittigen Schnittprofils der abzubildenden Zahnkavität 2, mit mesialem 8 und distalem 9 Nachbarzahn und Umriss des Bildaufnahmekopfes 10. An den Zähnen ist die äussere Schmelzschicht 81, das Dentin 82, das Pulpakavum 83, erkennbar. Fig. 4 shows the representation of a mesio-distal, central sectional profile of the imaged tooth cavity 2, with mesial 8 and distal 9 adjacent tooth and outline of the image pickup head 10 to the teeth, the outer layer of enamel 81, dentin 82, the pulp chamber 83, recognizable. Die Linie 21 markiert den Umriss des herzustellenden Passkörpers. The line 21 marks the outline of the product to pass body.
  • [0023] [0023]
    Vorgängig der bildlichen Erfassung der Oberflächen der zu versorgenden Körperorgane oder der mit einer Abdruckmasse hergestellten Abformungen, können deren Flächen mindestens teilweise mit einer abbildungstechnischen Beschichtung versehen werden. Advance of images of the surfaces of the supplied body organs or impressions produced using an impression compound, whose surfaces may be at least partially provided with a coating technical illustration. Das zu erfassende Bild wird durch die Beschichtung verstärkt oder differenziert bzw. kontrastiert, und es können störende Strukturen abgedeckt werden, was die bildhafte Erfassung erleichtert. The image to be captured is reinforced by the coating or differentiated and contrasted, and it can be covered disturbing structures, which facilitates the pictorial collection.
  • [0024] [0024]
    Die Erfindung stellt beispielsweise dem Zahnarzt, unter Ersatz der klassischen Abformung und labortechnischen Füllungsherstellung, ein Verfahren zur Verfügung, welches die entsprechend einer Inlaypräparation ausgearbeitete Kavität räumlich dimensionsgetreu erfasst, speichert und zur Kontrolle bildlich darstellt. The invention for example provides the dentist with the replacement of the classical impression and laboratory filling manufacturing, a method is available, which detects the corresponding one inlay preparation elaborated cavity spatially dimensionally accurate, stores, and depicting the control. Die in der zahnärztlichen Praxis oder in einem Labor vorhandene Bearbeitungsmaschine fertigt den Passkörper beispielsweise spanabhebend, schleifend oder erodierend gemäss den gespeicherten Angaben direkt aus einem Rohling. The existing in the dental office or in a laboratory machine manufactures the fitting body, for example by cutting, grinding or eroding according to the stored data directly from a blank. Der Passkörper steht dann dem Zahnarzt für die Zahnbehandlung unmittelbar zur Verfügung. The fitting body is then available to the dentist for dental treatment immediately available.
  • [0025] [0025]
    Das beschriebene Verfahren ermöglicht es, durch kombinierte Anwendung von in der Technik bereits angewandten Vermessungs-, Aufzeichnungs-, Darstellungs- und Berechnungsmethoden im medizinisch-zahntechnischen Bereich, Alloplastiken, unter optimierten, material- und arbeitstechnischen Bedinungen herzustellen. The method described makes it possible, by combined use of already used in the art for surveying, recording, display and calculation methods in the medical-dental area, allografts to produce under optimized, material and labor technical Bedinungen. Dadurch wird eine Qualitätssteigerung und Kostensenkung erzielt. This quality improvement and cost reduction is achieved.

Claims (6)

1. Process for the manufacture of individually shaped medical and dental, alloplastic, endoprosthetic and exoprosthetic fittings made of hard materials, wherein the surfaces of organs of the body or surfaces created at organs of the body, three dimensional forms and spaces along at least part of their walls and boundaries and operatively non treated surfaces adjacent to those configurations are optically detected in a contact-free manner with respect to their topographical and spatial characteristic and then are recorded by means of 3-dimensional image analysis, wherein by means of this record a design plan for a fitting suited for restoring said organ is calculated and graphically displayed for a visial check, wherein when making this design plan those surfaces which were not optically detected are completed by adapting pre-programmed curvatures to the boundaries of detected surfaces and wherein finally the respective material is shaped on the basis of said design plan and of a machining programme to an alloplastic fitting, the shape of which is adapted at least approximately to the shape of said organ.
2. Process as defined in claim 1, wherein the recorded surface information and design data, respectively, are displayed on a monitor, according to which data a calculator calculates and displays the alloplastic fitting matching into or onto the recorded shape and wherein instructions for constructive corrections or completions directly can be introduced by the operator until the design corresponds to the final requirements, whereafter the calculated design data are transmitted to the control unit of a processing machine.
3. Process as defined in one of the claims 1 to 2, wherein before performing the image detection of the surfaces of the organs of the body or of the molds made thereof by an impression material said surfaces are at least partly provided with an image coating.
4. Process as defined in one of the claims 1 to 3, wherein the organs neighboring and functionally antagonistic to the organ to be alloplastically restored are detected with respect to their orientation in space and to their distance and wherein the alloplastic fittings are shaped according to the respective neighboring and antagonistic relation with the possible exception of intraoperative manually performed adaptions.
5. Process as defined in one of the claims 1 to 4, wherein a control device for a processing machine is used and is further programmed in such a way that at least on portions of the fitting surface reduced dimensions are produced, whereby between the alloplastic fittings and the detected inner or outer form of the organ to be restored a clearance is provided for a material necessary for the adaption or adhesion of the alloplastic fitting to the tissue or for an intermediate substance necessary for physiological reasons or in such a way that depending on the application the control programme at least partly produces larger dimensions for technical or functional reasons.
6. Process as defined in claim 5, wherein the control device for shaping the outer surface of the alloplastic fitting is further programmed in such a way that this surface in its whole boundary region is shaped at least approximately as a continuation of the outer surface of the organ, wherein according to individual requirements given dimensions are used depending on aspects of its form or its function.
EP19810110135 1980-12-24 1981-12-04 Process for the manufacture of medical and dental, alloplastic, endoprosthetic and exoprosthetic fittings Expired EP0054785B1 (en)

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CH956180 1980-12-24

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EP0054785B1 true EP0054785B1 (en) 1985-07-03

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EP0091876A1 (en) * 1982-04-14 1983-10-19 Duret, François Device for taking impressions by optical means, particularly for the automatic shaping of dental prostheses
FR2536654A1 (en) * 1982-11-30 1984-06-01 Duret Francois Process for the realization of a dental prosthesis
EP0129531A2 (en) * 1983-06-17 1984-12-27 N.V. Stewal S.A. Process and device for producing a prosthesis
EP0161400A1 (en) * 1984-04-19 1985-11-21 Wolfgang Orthuber Method of dentistry and device for bending a piece of wire and subjecting it to a torsional stress
EP0229266A2 (en) * 1985-11-29 1987-07-22 Dietmar Prof. Dr. Kubein-Meesenburg Reconstruction method for the upper jaw teeth
DE3604531A1 (en) * 1986-02-13 1987-08-20 Kurt Kern Gmbh & Co Kg Method of producing denture parts and device for performing the method
FR2594320A1 (en) * 1986-02-20 1987-08-21 Spad Lab A method for improving the living elements albedo for their three-dimensional optical analysis
FR2616316A1 (en) * 1987-06-15 1988-12-16 Cougoulie Jean Pierre Method for producing an endo-osseous oral implant
EP0299490A2 (en) * 1987-07-16 1989-01-18 Hans Dr. Steinbichler Method for producing dental prosthesis
EP0345975A2 (en) * 1988-06-09 1989-12-13 William Loran Apparatus for indirect dental machining
EP0348061A2 (en) * 1988-06-24 1989-12-27 Zeneca Limited Stereolithographic Process for Preparing Prosthetic Devices
WO1990014803A1 (en) * 1989-05-31 1990-12-13 Berit Lindqvist Method of documentation and measurement within dentistry and a device for carrying out the method
WO1991003989A1 (en) * 1989-09-22 1991-04-04 Peter Rohleder Process and device for the production of an individual tooth replacement part
WO1991003988A1 (en) * 1989-09-22 1991-04-04 Peter Rohleder Device for the production of tooth replacement parts
EP0490848A2 (en) * 1990-12-12 1992-06-17 Nobelpharma AB A procedure and apparatus for producing individually designed, three-dimensional bodies usable as tooth replacements, prostheses, etc.
EP0543258A2 (en) * 1991-11-17 1993-05-26 Liconic Ag Method and device for the production of dental prosthesis
FR2690837A1 (en) * 1992-05-05 1993-11-12 Kaltenbach & Voigt A method of optical three-dimensional topometric recovery of the tooth surface without the amatir and method for determining correction values ​​for the coordinates of the surface of the optically measured teeth.
US5320462A (en) * 1989-08-17 1994-06-14 Maud Bergman Method of producing dental restorations and medical prostheses
US5358406A (en) * 1990-11-26 1994-10-25 Bard Bjerknes Method for adapting and implanting a dental porcelain chip, and the chip
EP0943295A1 (en) 1998-03-17 1999-09-22 Eidgenössische Technische Hochschule Zürich Method for the manufactoring of tooth crowns and/or dental bridges
EP0943296A1 (en) 1998-03-17 1999-09-22 Eidgenössische Technische Hochschule Zürich Tooth crowns and/or dental bridges
US8026943B2 (en) 2000-11-08 2011-09-27 Institut Straumann Ag Surface mapping and generating devices and methods for surface mapping and surface generation

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US4837732A (en) * 1986-06-24 1989-06-06 Marco Brandestini Method and apparatus for the three-dimensional registration and display of prepared teeth
DE4025728A1 (en) * 1990-08-14 1992-02-20 Wolfgang Becker Forming total dental prosthesis
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DE4204327C2 (en) * 1992-02-14 2000-07-06 Joachim Becker Method and apparatus for producing a medical or dental restoration body
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DE10133568A1 (en) 2001-07-13 2003-01-30 Degussa Dental Gmbh & Co Kg Method and apparatus for three-dimensional scanning and digitization of a body
EP1304088A1 (en) * 2001-10-09 2003-04-23 Mörmann, Werner Method and apparatus of manufacturing dental prosthesis
EP1870667A3 (en) * 2002-10-18 2008-03-19 Aepsilon Rechteverwaltungs GmbH Devices and methods for capturing surfaces and for producing denture elements
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DE102009017450A1 (en) 2009-04-07 2010-10-21 Horvath, Domonkos, Dr. med. dent Industrially manufacturable Veneer for permanent attachment to a tooth
WO2017088073A1 (en) 2015-11-26 2017-06-01 Quarz Partners Ag Blank and method for producing a dental restoration

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FR2525103A1 (en) * 1982-04-14 1983-10-21 Francois Duret A fingerprinting by optical means, in particular for the automatic realization of prostheses
EP0091876A1 (en) * 1982-04-14 1983-10-19 Duret, François Device for taking impressions by optical means, particularly for the automatic shaping of dental prostheses
EP0110797A1 (en) * 1982-11-30 1984-06-13 François Duret Process for producing a dental prosthesis
FR2536654A1 (en) * 1982-11-30 1984-06-01 Duret Francois Process for the realization of a dental prosthesis
EP0129531A2 (en) * 1983-06-17 1984-12-27 N.V. Stewal S.A. Process and device for producing a prosthesis
EP0129531A3 (en) * 1983-06-17 1985-08-21 N.V. Stewal S.A. Process and device for producing a prosthesis
EP0161400A1 (en) * 1984-04-19 1985-11-21 Wolfgang Orthuber Method of dentistry and device for bending a piece of wire and subjecting it to a torsional stress
EP0229266A3 (en) * 1985-11-29 1987-10-28 Dietmar Prof. Dr. Kubein-Meesenburg Reconstruction method for the upper jaw teeth
EP0229266A2 (en) * 1985-11-29 1987-07-22 Dietmar Prof. Dr. Kubein-Meesenburg Reconstruction method for the upper jaw teeth
DE3604531A1 (en) * 1986-02-13 1987-08-20 Kurt Kern Gmbh & Co Kg Method of producing denture parts and device for performing the method
EP0234422A1 (en) * 1986-02-20 1987-09-02 Laboratoire S.P.A.D. Method for improving the reflectivity of living matter for 3D optical analysis
FR2594320A1 (en) * 1986-02-20 1987-08-21 Spad Lab A method for improving the living elements albedo for their three-dimensional optical analysis
FR2616316A1 (en) * 1987-06-15 1988-12-16 Cougoulie Jean Pierre Method for producing an endo-osseous oral implant
EP0299490A2 (en) * 1987-07-16 1989-01-18 Hans Dr. Steinbichler Method for producing dental prosthesis
DE3723555A1 (en) * 1987-07-16 1989-01-26 Steinbichler Hans A process for the production of dentures
EP0299490A3 (en) * 1987-07-16 1991-03-13 Hans Dr. Steinbichler Method for producing dental prosthesis
US4964770A (en) * 1987-07-16 1990-10-23 Hans Steinbichler Process of making artificial teeth
EP0345975A3 (en) * 1988-06-09 1991-06-26 William Loran Apparatus for indirect dental machining
EP0345975A2 (en) * 1988-06-09 1989-12-13 William Loran Apparatus for indirect dental machining
EP0348061A2 (en) * 1988-06-24 1989-12-27 Zeneca Limited Stereolithographic Process for Preparing Prosthetic Devices
EP0348061A3 (en) * 1988-06-24 1990-09-19 Imperial Chemical Industries Plc Prosthetic devices
WO1990014803A1 (en) * 1989-05-31 1990-12-13 Berit Lindqvist Method of documentation and measurement within dentistry and a device for carrying out the method
US5320462A (en) * 1989-08-17 1994-06-14 Maud Bergman Method of producing dental restorations and medical prostheses
WO1991003989A1 (en) * 1989-09-22 1991-04-04 Peter Rohleder Process and device for the production of an individual tooth replacement part
WO1991003988A1 (en) * 1989-09-22 1991-04-04 Peter Rohleder Device for the production of tooth replacement parts
US5358406A (en) * 1990-11-26 1994-10-25 Bard Bjerknes Method for adapting and implanting a dental porcelain chip, and the chip
EP0490848A2 (en) * 1990-12-12 1992-06-17 Nobelpharma AB A procedure and apparatus for producing individually designed, three-dimensional bodies usable as tooth replacements, prostheses, etc.
EP0490848A3 (en) * 1990-12-12 1993-12-29 Nobelpharma Ab A procedure and apparatus for producing individually designed, three-dimensional bodies usable as tooth replacements, prostheses, etc
EP0543258A2 (en) * 1991-11-17 1993-05-26 Liconic Ag Method and device for the production of dental prosthesis
FR2690837A1 (en) * 1992-05-05 1993-11-12 Kaltenbach & Voigt A method of optical three-dimensional topometric recovery of the tooth surface without the amatir and method for determining correction values ​​for the coordinates of the surface of the optically measured teeth.
EP0943295A1 (en) 1998-03-17 1999-09-22 Eidgenössische Technische Hochschule Zürich Method for the manufactoring of tooth crowns and/or dental bridges
EP0943296A1 (en) 1998-03-17 1999-09-22 Eidgenössische Technische Hochschule Zürich Tooth crowns and/or dental bridges
WO1999047065A1 (en) 1998-03-17 1999-09-23 Eidgenössische Technische Hochschule Zürich Nichtmetallische Werkstoffe Dental crowns and/or dental bridges
US8026943B2 (en) 2000-11-08 2011-09-27 Institut Straumann Ag Surface mapping and generating devices and methods for surface mapping and surface generation
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DE3171266D1 (en) 1985-08-08 grant
JP1665145C (en) grant
JPS57173053A (en) 1982-10-25 application
EP0054785A1 (en) 1982-06-30 application
JPH0317494B2 (en) 1991-03-08 grant

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